Reinvestigation of the collective band structures in odd-odd 138Pm nucleus H. J. Li, Z. G. Xiao, S. J. Zhu, C. Qi, E. Y. Yeoh, Z. Zhang, R. S. Wang, H. Yi, W. H. Yan, Q. Xu et al. (10 more) Eur. Phys. J. A, 51 5 (2015) 60 Published online: 25 May 2015 DOI: 10.1140/epja/i2015-15060-9